/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:06:29,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:06:29,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:06:29,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:06:29,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:06:29,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:06:29,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:06:29,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 15:06:29,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:06:29,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:06:29,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:06:29,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:06:29,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:06:29,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:06:29,535 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:06:29,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:06:29,536 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:06:29,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:06:29,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:06:29,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:06:29,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:06:29,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 15:06:29,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:06:29,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 15:06:29,539 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 15:06:29,540 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:06:29,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 15:06:29,540 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:06:29,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 15:06:29,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:06:29,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:06:29,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:06:29,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:06:29,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:06:29,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:06:29,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 15:06:29,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 15:06:29,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 15:06:29,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 15:06:29,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:06:29,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:06:29,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:06:30,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:06:30,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:06:30,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:06:30,029 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:06:30,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2021-10-07 15:06:30,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d63c2f72/65ff236335b44286b2919902b6401acb/FLAG4bb118652 [2021-10-07 15:06:30,764 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:06:30,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2021-10-07 15:06:30,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d63c2f72/65ff236335b44286b2919902b6401acb/FLAG4bb118652 [2021-10-07 15:06:31,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d63c2f72/65ff236335b44286b2919902b6401acb [2021-10-07 15:06:31,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:06:31,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 15:06:31,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:06:31,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:06:31,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:06:31,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d34a17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31, skipping insertion in model container [2021-10-07 15:06:31,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:06:31,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:06:31,350 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2418,2431] [2021-10-07 15:06:31,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:06:31,370 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:06:31,399 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2418,2431] [2021-10-07 15:06:31,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:06:31,425 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:06:31,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31 WrapperNode [2021-10-07 15:06:31,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:06:31,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:06:31,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:06:31,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:06:31,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:06:31,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:06:31,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:06:31,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:06:31,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:06:31,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:06:31,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:06:31,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:06:31,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31" (1/1) ... [2021-10-07 15:06:31,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:06:31,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:31,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:06:31,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:06:31,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:06:31,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:06:31,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:06:31,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:06:31,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:06:31,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:06:31,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 15:06:31,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:06:31,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 15:06:31,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:06:31,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:06:31,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 15:06:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:06:31,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:06:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 15:06:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:06:31,684 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:06:32,422 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:06:32,423 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-07 15:06:32,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:06:32 BoogieIcfgContainer [2021-10-07 15:06:32,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:06:32,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:06:32,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:06:32,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:06:32,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:06:31" (1/3) ... [2021-10-07 15:06:32,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2867bd44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:06:32, skipping insertion in model container [2021-10-07 15:06:32,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:06:31" (2/3) ... [2021-10-07 15:06:32,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2867bd44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:06:32, skipping insertion in model container [2021-10-07 15:06:32,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:06:32" (3/3) ... [2021-10-07 15:06:32,436 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2021-10-07 15:06:32,443 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 15:06:32,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:06:32,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-07 15:06:32,444 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:06:32,483 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,484 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,484 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,485 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,485 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,485 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,487 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,488 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,489 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,490 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,492 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,492 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,492 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,493 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,493 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,495 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,495 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,495 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,496 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,496 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,496 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,498 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,498 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,498 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,498 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,499 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,499 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,499 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,499 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,500 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,500 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,500 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,503 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,504 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,504 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,504 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,510 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,510 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,513 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,513 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,514 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,514 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,514 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,514 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,516 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,517 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,517 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,517 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,518 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,518 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:06:32,527 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:06:32,594 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:06:32,604 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:06:32,605 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-07 15:06:32,628 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:06:32,643 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 146 transitions, 316 flow [2021-10-07 15:06:32,647 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 146 transitions, 316 flow [2021-10-07 15:06:32,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 146 transitions, 316 flow [2021-10-07 15:06:32,731 INFO L129 PetriNetUnfolder]: 10/143 cut-off events. [2021-10-07 15:06:32,732 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:06:32,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 143 events. 10/143 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2021-10-07 15:06:32,742 INFO L116 LiptonReduction]: Number of co-enabled transitions 1370 [2021-10-07 15:06:40,251 INFO L131 LiptonReduction]: Checked pairs total: 1980 [2021-10-07 15:06:40,251 INFO L133 LiptonReduction]: Total number of compositions: 150 [2021-10-07 15:06:40,263 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 31 transitions, 86 flow [2021-10-07 15:06:40,291 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 177 states, 166 states have (on average 3.0301204819277108) internal successors, (503), 176 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 166 states have (on average 3.0301204819277108) internal successors, (503), 176 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:40,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:06:40,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:40,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:06:40,303 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-07 15:06:40,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:40,310 INFO L82 PathProgramCache]: Analyzing trace with hash 18769, now seen corresponding path program 1 times [2021-10-07 15:06:40,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:40,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361429569] [2021-10-07 15:06:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:40,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:40,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:40,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361429569] [2021-10-07 15:06:40,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361429569] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:06:40,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:06:40,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:06:40,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150919848] [2021-10-07 15:06:40,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:06:40,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:40,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:06:40,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:40,612 INFO L87 Difference]: Start difference. First operand has 177 states, 166 states have (on average 3.0301204819277108) internal successors, (503), 176 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:40,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:40,719 INFO L93 Difference]: Finished difference Result 351 states and 1003 transitions. [2021-10-07 15:06:40,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:06:40,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 15:06:40,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:40,758 INFO L225 Difference]: With dead ends: 351 [2021-10-07 15:06:40,758 INFO L226 Difference]: Without dead ends: 347 [2021-10-07 15:06:40,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:40,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-10-07 15:06:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 176. [2021-10-07 15:06:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 166 states have (on average 3.0120481927710845) internal successors, (500), 175 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 500 transitions. [2021-10-07 15:06:40,891 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 500 transitions. Word has length 2 [2021-10-07 15:06:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:40,892 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 500 transitions. [2021-10-07 15:06:40,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 500 transitions. [2021-10-07 15:06:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:06:40,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:40,894 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:06:40,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 15:06:40,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-07 15:06:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:40,896 INFO L82 PathProgramCache]: Analyzing trace with hash 582597, now seen corresponding path program 1 times [2021-10-07 15:06:40,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:40,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984417178] [2021-10-07 15:06:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:40,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:41,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:41,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984417178] [2021-10-07 15:06:41,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984417178] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:41,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295700122] [2021-10-07 15:06:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:41,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:41,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:41,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:06:41,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-07 15:06:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:41,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:06:41,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:41,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295700122] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:41,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:06:41,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 15:06:41,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277744809] [2021-10-07 15:06:41,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:06:41,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:06:41,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:06:41,180 INFO L87 Difference]: Start difference. First operand 176 states and 500 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:41,226 INFO L93 Difference]: Finished difference Result 519 states and 1489 transitions. [2021-10-07 15:06:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:06:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:06:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:41,234 INFO L225 Difference]: With dead ends: 519 [2021-10-07 15:06:41,235 INFO L226 Difference]: Without dead ends: 519 [2021-10-07 15:06:41,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:06:41,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-10-07 15:06:41,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 177. [2021-10-07 15:06:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 167 states have (on average 3.0119760479041915) internal successors, (503), 176 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 503 transitions. [2021-10-07 15:06:41,259 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 503 transitions. Word has length 3 [2021-10-07 15:06:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:41,260 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 503 transitions. [2021-10-07 15:06:41,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 503 transitions. [2021-10-07 15:06:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:06:41,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:41,262 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:06:41,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:06:41,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:41,477 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-07 15:06:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:41,478 INFO L82 PathProgramCache]: Analyzing trace with hash 582598, now seen corresponding path program 1 times [2021-10-07 15:06:41,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:41,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167060881] [2021-10-07 15:06:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:41,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:41,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:41,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167060881] [2021-10-07 15:06:41,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167060881] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:06:41,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:06:41,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:06:41,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488899381] [2021-10-07 15:06:41,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:06:41,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:41,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:06:41,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:41,555 INFO L87 Difference]: Start difference. First operand 177 states and 503 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:41,582 INFO L93 Difference]: Finished difference Result 176 states and 501 transitions. [2021-10-07 15:06:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:06:41,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:06:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:41,588 INFO L225 Difference]: With dead ends: 176 [2021-10-07 15:06:41,589 INFO L226 Difference]: Without dead ends: 176 [2021-10-07 15:06:41,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:41,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-07 15:06:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-10-07 15:06:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 167 states have (on average 3.0) internal successors, (501), 175 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 501 transitions. [2021-10-07 15:06:41,616 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 501 transitions. Word has length 3 [2021-10-07 15:06:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:41,617 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 501 transitions. [2021-10-07 15:06:41,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 501 transitions. [2021-10-07 15:06:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:06:41,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:41,620 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 15:06:41,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-07 15:06:41,621 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-07 15:06:41,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:41,621 INFO L82 PathProgramCache]: Analyzing trace with hash 18061265, now seen corresponding path program 2 times [2021-10-07 15:06:41,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:41,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665170738] [2021-10-07 15:06:41,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:41,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:41,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:41,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665170738] [2021-10-07 15:06:41,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665170738] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:41,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867326466] [2021-10-07 15:06:41,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:06:41,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:41,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:41,739 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:06:41,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-07 15:06:41,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:06:41,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:06:41,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:06:41,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:06:41,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867326466] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:06:41,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:06:41,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 15:06:41,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415173816] [2021-10-07 15:06:41,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:06:41,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:41,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:06:41,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:06:41,837 INFO L87 Difference]: Start difference. First operand 176 states and 501 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:41,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:41,845 INFO L93 Difference]: Finished difference Result 175 states and 500 transitions. [2021-10-07 15:06:41,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:06:41,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 15:06:41,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:41,847 INFO L225 Difference]: With dead ends: 175 [2021-10-07 15:06:41,848 INFO L226 Difference]: Without dead ends: 175 [2021-10-07 15:06:41,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:06:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-07 15:06:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2021-10-07 15:06:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 165 states have (on average 3.006060606060606) internal successors, (496), 172 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 496 transitions. [2021-10-07 15:06:41,858 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 496 transitions. Word has length 4 [2021-10-07 15:06:41,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:41,858 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 496 transitions. [2021-10-07 15:06:41,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:41,859 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 496 transitions. [2021-10-07 15:06:41,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:06:41,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:41,859 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:06:41,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:06:42,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:42,075 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-07 15:06:42,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:42,077 INFO L82 PathProgramCache]: Analyzing trace with hash 559932810, now seen corresponding path program 1 times [2021-10-07 15:06:42,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:42,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396858300] [2021-10-07 15:06:42,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:42,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:42,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:42,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396858300] [2021-10-07 15:06:42,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396858300] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:06:42,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:06:42,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:06:42,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477535220] [2021-10-07 15:06:42,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:06:42,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:06:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:42,132 INFO L87 Difference]: Start difference. First operand 173 states and 496 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:42,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:42,149 INFO L93 Difference]: Finished difference Result 247 states and 706 transitions. [2021-10-07 15:06:42,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:06:42,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:06:42,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:42,152 INFO L225 Difference]: With dead ends: 247 [2021-10-07 15:06:42,153 INFO L226 Difference]: Without dead ends: 247 [2021-10-07 15:06:42,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:42,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-10-07 15:06:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 205. [2021-10-07 15:06:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 197 states have (on average 3.1269035532994924) internal successors, (616), 204 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 616 transitions. [2021-10-07 15:06:42,164 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 616 transitions. Word has length 5 [2021-10-07 15:06:42,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:42,164 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 616 transitions. [2021-10-07 15:06:42,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:42,165 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 616 transitions. [2021-10-07 15:06:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:06:42,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:42,165 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:06:42,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-07 15:06:42,166 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-07 15:06:42,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:42,167 INFO L82 PathProgramCache]: Analyzing trace with hash 178049219, now seen corresponding path program 1 times [2021-10-07 15:06:42,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:42,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112511325] [2021-10-07 15:06:42,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:42,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:42,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:42,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112511325] [2021-10-07 15:06:42,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112511325] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:06:42,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:06:42,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:06:42,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980655490] [2021-10-07 15:06:42,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:06:42,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:06:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:42,206 INFO L87 Difference]: Start difference. First operand 205 states and 616 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:42,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:42,220 INFO L93 Difference]: Finished difference Result 173 states and 522 transitions. [2021-10-07 15:06:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:06:42,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:06:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:42,223 INFO L225 Difference]: With dead ends: 173 [2021-10-07 15:06:42,223 INFO L226 Difference]: Without dead ends: 173 [2021-10-07 15:06:42,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:42,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-07 15:06:42,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-10-07 15:06:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 3.107142857142857) internal successors, (522), 172 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 522 transitions. [2021-10-07 15:06:42,232 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 522 transitions. Word has length 6 [2021-10-07 15:06:42,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:42,233 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 522 transitions. [2021-10-07 15:06:42,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:42,233 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 522 transitions. [2021-10-07 15:06:42,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:06:42,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:42,234 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:06:42,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-07 15:06:42,235 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-07 15:06:42,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:42,235 INFO L82 PathProgramCache]: Analyzing trace with hash 178049187, now seen corresponding path program 1 times [2021-10-07 15:06:42,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:42,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692935887] [2021-10-07 15:06:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:42,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:42,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:42,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692935887] [2021-10-07 15:06:42,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692935887] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:42,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973081319] [2021-10-07 15:06:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:42,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:42,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:42,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:06:42,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-07 15:06:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:42,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:06:42,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:42,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973081319] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:06:42,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:06:42,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2021-10-07 15:06:42,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497118249] [2021-10-07 15:06:42,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:06:42,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:42,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:06:42,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:06:42,430 INFO L87 Difference]: Start difference. First operand 173 states and 522 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:42,471 INFO L93 Difference]: Finished difference Result 174 states and 523 transitions. [2021-10-07 15:06:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:06:42,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:06:42,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:42,474 INFO L225 Difference]: With dead ends: 174 [2021-10-07 15:06:42,474 INFO L226 Difference]: Without dead ends: 174 [2021-10-07 15:06:42,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:06:42,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-07 15:06:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-10-07 15:06:42,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 3.094674556213018) internal successors, (523), 173 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 523 transitions. [2021-10-07 15:06:42,485 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 523 transitions. Word has length 6 [2021-10-07 15:06:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:42,487 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 523 transitions. [2021-10-07 15:06:42,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:42,488 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 523 transitions. [2021-10-07 15:06:42,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:06:42,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:42,489 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:06:42,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:06:42,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:42,704 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-07 15:06:42,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:42,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1194004759, now seen corresponding path program 1 times [2021-10-07 15:06:42,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:42,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551864293] [2021-10-07 15:06:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:42,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:06:42,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:42,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551864293] [2021-10-07 15:06:42,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551864293] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:42,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172813660] [2021-10-07 15:06:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:42,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:42,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:42,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:06:42,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-07 15:06:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:42,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:06:42,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:42,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172813660] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:42,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:06:42,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 8 [2021-10-07 15:06:42,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61453646] [2021-10-07 15:06:42,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:06:42,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:42,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:06:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:06:42,974 INFO L87 Difference]: Start difference. First operand 174 states and 523 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:43,185 INFO L93 Difference]: Finished difference Result 434 states and 1184 transitions. [2021-10-07 15:06:43,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:06:43,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:06:43,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:43,193 INFO L225 Difference]: With dead ends: 434 [2021-10-07 15:06:43,193 INFO L226 Difference]: Without dead ends: 416 [2021-10-07 15:06:43,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 87.8ms TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:06:43,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-10-07 15:06:43,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 290. [2021-10-07 15:06:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 285 states have (on average 3.143859649122807) internal successors, (896), 289 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 896 transitions. [2021-10-07 15:06:43,213 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 896 transitions. Word has length 7 [2021-10-07 15:06:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:43,220 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 896 transitions. [2021-10-07 15:06:43,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 896 transitions. [2021-10-07 15:06:43,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:06:43,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:43,225 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:06:43,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:06:43,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:43,440 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-07 15:06:43,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:43,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1636017225, now seen corresponding path program 1 times [2021-10-07 15:06:43,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:43,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009554964] [2021-10-07 15:06:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:43,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:06:43,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:43,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009554964] [2021-10-07 15:06:43,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009554964] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:06:43,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:06:43,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:06:43,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230531248] [2021-10-07 15:06:43,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:06:43,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:43,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:06:43,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:43,478 INFO L87 Difference]: Start difference. First operand 290 states and 896 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:43,497 INFO L93 Difference]: Finished difference Result 388 states and 1198 transitions. [2021-10-07 15:06:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:06:43,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 15:06:43,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:43,502 INFO L225 Difference]: With dead ends: 388 [2021-10-07 15:06:43,502 INFO L226 Difference]: Without dead ends: 388 [2021-10-07 15:06:43,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-07 15:06:43,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 358. [2021-10-07 15:06:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 353 states have (on average 3.223796033994334) internal successors, (1138), 357 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1138 transitions. [2021-10-07 15:06:43,523 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1138 transitions. Word has length 8 [2021-10-07 15:06:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:43,524 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 1138 transitions. [2021-10-07 15:06:43,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,527 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1138 transitions. [2021-10-07 15:06:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:06:43,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:43,530 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-07 15:06:43,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-07 15:06:43,534 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-07 15:06:43,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:43,535 INFO L82 PathProgramCache]: Analyzing trace with hash -264827382, now seen corresponding path program 2 times [2021-10-07 15:06:43,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:43,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648660897] [2021-10-07 15:06:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:43,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:06:43,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:43,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648660897] [2021-10-07 15:06:43,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648660897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:43,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005049744] [2021-10-07 15:06:43,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:06:43,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:43,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:43,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:06:43,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-07 15:06:43,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:06:43,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:06:43,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:06:43,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:06:43,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005049744] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:06:43,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:06:43,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-07 15:06:43,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352570390] [2021-10-07 15:06:43,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:06:43,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:43,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:06:43,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:06:43,701 INFO L87 Difference]: Start difference. First operand 358 states and 1138 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:43,716 INFO L93 Difference]: Finished difference Result 286 states and 908 transitions. [2021-10-07 15:06:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:06:43,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 15:06:43,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:43,719 INFO L225 Difference]: With dead ends: 286 [2021-10-07 15:06:43,720 INFO L226 Difference]: Without dead ends: 262 [2021-10-07 15:06:43,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:06:43,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-07 15:06:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 178. [2021-10-07 15:06:43,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.994350282485876) internal successors, (530), 177 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 530 transitions. [2021-10-07 15:06:43,729 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 530 transitions. Word has length 9 [2021-10-07 15:06:43,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:43,730 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 530 transitions. [2021-10-07 15:06:43,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,730 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 530 transitions. [2021-10-07 15:06:43,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:06:43,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:43,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:06:43,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:06:43,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:43,948 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-07 15:06:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:43,949 INFO L82 PathProgramCache]: Analyzing trace with hash 823074134, now seen corresponding path program 1 times [2021-10-07 15:06:43,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:43,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957947690] [2021-10-07 15:06:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:43,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:06:43,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:43,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957947690] [2021-10-07 15:06:43,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957947690] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:06:43,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:06:43,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:06:43,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431856422] [2021-10-07 15:06:43,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:06:43,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:06:43,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:43,982 INFO L87 Difference]: Start difference. First operand 178 states and 530 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:43,988 INFO L93 Difference]: Finished difference Result 138 states and 406 transitions. [2021-10-07 15:06:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:06:43,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 15:06:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:43,989 INFO L225 Difference]: With dead ends: 138 [2021-10-07 15:06:43,989 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 15:06:43,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:06:43,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 15:06:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 15:06:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 15:06:43,991 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-07 15:06:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:43,991 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 15:06:43,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 15:06:43,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 15:06:43,994 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:06:43,995 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:06:43,995 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:06:43,996 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:06:43,996 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:06:43,996 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:06:43,996 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:06:43,996 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:06:43,996 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:06:43,997 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:06:43,997 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:06:43,997 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:06:43,997 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:06:43,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-07 15:06:44,005 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:06:44,005 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:06:44,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:06:44 BasicIcfg [2021-10-07 15:06:44,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:06:44,008 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-07 15:06:44,008 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-07 15:06:44,008 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-07 15:06:44,009 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:06:32" (3/4) ... [2021-10-07 15:06:44,012 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-07 15:06:44,019 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-07 15:06:44,019 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-07 15:06:44,019 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-07 15:06:44,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-07 15:06:44,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-07 15:06:44,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 15:06:44,026 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 15:06:44,071 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-more-min-le-max.wvr.c-witness.graphml [2021-10-07 15:06:44,072 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-07 15:06:44,074 INFO L168 Benchmark]: Toolchain (without parser) took 12980.52 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 126.1 MB in the beginning and 124.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 44.2 MB. Max. memory is 8.0 GB. [2021-10-07 15:06:44,074 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:06:44,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.14 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 114.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:06:44,075 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.35 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 113.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:06:44,075 INFO L168 Benchmark]: Boogie Preprocessor took 37.09 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 111.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:06:44,076 INFO L168 Benchmark]: RCFGBuilder took 906.55 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 127.3 MB in the end (delta: -15.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:06:44,076 INFO L168 Benchmark]: TraceAbstraction took 11579.52 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 126.7 MB in the beginning and 127.5 MB in the end (delta: -742.4 kB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. [2021-10-07 15:06:44,077 INFO L168 Benchmark]: Witness Printer took 63.50 ms. Allocated memory is still 192.9 MB. Free memory was 127.5 MB in the beginning and 124.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:06:44,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 321.14 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 114.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.35 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 113.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.09 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 111.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 906.55 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 127.3 MB in the end (delta: -15.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11579.52 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 126.7 MB in the beginning and 127.5 MB in the end (delta: -742.4 kB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. * Witness Printer took 63.50 ms. Allocated memory is still 192.9 MB. Free memory was 127.5 MB in the beginning and 124.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7604.2ms, 146 PlacesBefore, 38 PlacesAfterwards, 146 TransitionsBefore, 31 TransitionsAfterwards, 1370 CoEnabledTransitionPairs, 7 FixpointIterations, 85 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 150 TotalNumberOfCompositions, 1980 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1509, positive: 1466, positive conditional: 0, positive unconditional: 1466, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 920, positive: 906, positive conditional: 0, positive unconditional: 906, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 920, positive: 906, positive conditional: 0, positive unconditional: 906, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 61, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1509, positive: 560, positive conditional: 0, positive unconditional: 560, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 920, unknown conditional: 0, unknown unconditional: 920] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 106]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 106]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 170 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 11412.1ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 26.1ms, AutomataDifference: 641.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7685.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 261 SDtfs, 309 SDslu, 289 SDs, 0 SdLazy, 170 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 213.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 155.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=9, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 242.9ms AutomataMinimizationTime, 11 MinimizatonAttempts, 797 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 86.2ms SsaConstructionTime, 345.3ms SatisfiabilityAnalysisTime, 774.4ms InterpolantComputationTime, 91 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 8 NumberOfNonLiveVariables, 479 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 16 InterpolantComputations, 9 PerfectInterpolantSequences, 20/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 15:06:44,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...